qcom-adreno: fix invalid negation in conditionals (#1905)

Replace the invalid `not` with `!` in conditionals

Use `!` instead of `not` in conditionals since it is not a valid shell
operator; as seen in the build logs:
```
run.do_install.114409: 143: not: not found
run.do_install.114409: 147: not: not found
```
The conditionals always evaluated to false, so when a user does not have
`x11` or `wayland` in `DISTRO_FEATURES`, this causes the `do_package`
task to fail, e.g.:
```
qcom-adreno: Files/directories were installed but not shipped in any package:
    /usr/lib/libeglSubDriverX11.so.1
```

Author: ricardosalveti

recipes-graphics/adreno/qcom-adreno_1.855.4.bb

@@ -56,11 +56,11 @@ do_install () {
     install -d ${D}/${libdir}
     cp -r ${S}/usr/lib/* ${D}/${libdir}/
 
-    if not ${@bb.utils.contains('DISTRO_FEATURES', 'x11', 'true', 'false', d)}; then
+    if ! ${@bb.utils.contains('DISTRO_FEATURES', 'x11', 'true', 'false', d)}; then
         rm ${D}/${libdir}/libeglSubDriverX11.so*
     fi
 
-    if not ${@bb.utils.contains('DISTRO_FEATURES', 'wayland', 'true', 'false', d)}; then
+    if ! ${@bb.utils.contains('DISTRO_FEATURES', 'wayland', 'true', 'false', d)}; then
         rm ${D}/${libdir}/libeglSubDriverWayland.so*
     fi